If this message is sent by your Sparda-Bank, your debit card must be re-synchronized on the website of the bank:
'Log in the online banking website of the Sparda-Bank'> 'Service Center'> 'Manage TAN'> 'Change chipTAN'> 'Synchronize current debit card'
After the synchronization, after the synchronization you should be able to refresh your accounts in Outbank again.